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SS.SSa.IFiSa.ScupHyd
Sertularia cupressina and Hydrallmania falcata on tide-swept sublittoral sand with cobbles or pebbles.

Full Hierarchy  >>  SS >>  SS.SSa >>  SS.SSa.IFiSa >>  SS.SSa.IFiSa.ScupHyd

Habitat (physical) description

Distribution

 Salinity: Full (30-35 ppt) 
 Wave exposure: Moderately exposed, Sheltered 
 Tidal streams: Strong (3-6 kn), Moderately strong (1-3 kn), Weak (>1 kn) 
 Substratum: Medium to fine sand with pebbles and cobbles 
 Zone: Circalittoral, Infralittoral 
 Depth Band: 0-5 m, 5-10 m, 10-20 m 
 Other Features: Sand scour 

Download comparative physical and biological data. The comparative tables enable a rapid comparison of the species composition and principal physical characteristics between a given set of biotopes.

Previous code

This biotope occurred in previous versions of the classification as:
IGS.Scup - Version: 96.7

Distribution of habitat SS.SSa.IFiSa.ScupHyd  Sertularia cupressina and Hydrallmania falcata on tide-swept sublittoral sand with cobbles or pebbles.
Distribution of habitat SS.SSa.IFiSa.ScupHyd Sertularia cupressina and Hydrallmania falcata on tide-swept sublittoral sand with cobbles or pebbles., based on records on the UK Marine Recorder database and EUSeaMap. Red dots represent records on which the biotope is based. Blue dots show other certain records, black dots show records tentatively assigned to this biotope. Yellow areas show level 2 and 3 sublittoral and deep-sea habitats prediced by EUSeaMap within UK waters.

Biotope description

Shallow sands with cobbles and pebbles, exposed to strong tidal streams, with conspicuous colonies of hydroids, particularly Hydrallmania falcata and to a lesser extent Sertularia cupressina and S. argentea. These hydroids are tolerant to periodic submergence and scour by sand. Both diving and dredge surveys will easily record this biotope. Flustra foliacea, Balanus crenatus and Alcyonidium diaphanum may also occur on the more stable cobbles and pebbles, with Urticina felina and occasional Lanice conchilega present in the sand. Infaunal components of the other biotopes in the SSA or SCS complex may occur in this biotope as may elements of the 'Venus' associations; indeed, this biotope may be at one extreme of the spectrum of such associations (E.I.S. Rees pers. comm. 1997) and this biotope may be best considered an epibiotic overlay.

Situation

No situation data available.

Temporal variation

No temporal data available.

Similar biotopes

SS.SMx.CMx.FluHydThe less scoured biotope FluHyd occurs in deeper water where there is less sand and a higher proportion of stones and cobbles.

Characterising Species

Taxa Frequency Typical Abundance % Contribution to similarity Abundance (no.2)
Hydrallmania falcata O 18
Sertularia argentea O 3
Sertularia cupressina P 12
Urticina felina R 8
Lanice conchilega O 11
Sabella pavonina R 1
Balanus crenatus R 4
Pagurus bernhardus R 12
Liocarcinus depurator R 1
Carcinus maenas P 5
Mytilus edulis P 1
Alcyonidium diaphanum O 6
Flustra foliacea R 2
Asterias rubens O 5

Example photographs of biotope

No characteristic photos currently available. If you are able to provide a photograph of this biotope please contact .


Version 15.03 of the classification adds a deep-sea section to version 04.05; therefore superseding version 04.05, 97.06 and 03.02.

This online classification should be cited as:

JNCC (2015) The Marine Habitat Classification for Britain and Ireland Version 15.03 [Online]. [Date accessed]. Available from: jncc.defra.gov.uk/MarineHabitatClassification

Information from the shallower section (up to sublittoral sediment, taken from Version 04.05) be cited as the report accompanying Version 04.05, as follows:

CONNOR, D.W., J.H. ALLEN, N.GOLDING, K.L.HOWELL, L.M. LIEBERKNECHT, K.O. NORTHEN AND J.B. REKER (2004) The Marine Habitat Classification for Britain and Ireland Version 04.05. In: JNCC (2015) The Marine Habitat Classification for Britain and Ireland Version 15.03 [Online]. [Date accessed].
Available from: jncc.defra.gov.uk/MarineHabitatClassification
ISBN 1 861 07561 8


Information from the deep-sea section (added in March 2015) should be cited as the report accompanying the deep-sea section, as follows:

PARRY, M.E.V., K.L. HOWELL, B.E. NARAYANASWAMY, B.J. BETT, D.O.B. JONES, D.J. HUGHES, N. PIECHAUD, T.D. NICKELL, H. ELLWOOD, N. ASKEW, C. JENKINS and E. MANCA (2015) A Deep-sea Section for the Marine Habitat Classification of Britain and Ireland. JNCC report 530. In: JNCC (2015) The Marine Habitat Classification for Britain and Ireland Version 15.03 [Online]. [Date accessed].
Available from: jncc.defra.gov.uk/MarineHabitatClassification
ISSN 0963 8901